Fiba 24" ASME N.B. Cryogenic Storage Tank — 84.5 cu.ft., 5500 PSIG

Is this ASME or DOT rated, and what does that allow me to do with it?

This is an ASME Code vessel with an N.B. stamp, which qualifies it as a stationary pressure vessel under the National Board code. ASME vessels are designed for fixed installation at a facility and cannot be transported over public roads when charged, unlike DOT cylinders. If you need a portable solution for over-the-road transport, you'll need DOT-rated cylinders instead.

What is the MAWP and capacity at service pressure?

The listing states a working pressure of 5500 PSIG and a capacity of 84.5 cubic feet. ASME vessels typically have the MAWP (maximum allowable working pressure) stamped on the nameplate along with design temperature and test pressure; confirm these from the data plate or ask the seller for the nameplate details if not visible in photos.

What is the requalification or inspection status?

The unit is listed as new, so no requalification should be required at time of purchase. ASME vessels do not have federally mandated requalification intervals like DOT cylinders, but many jurisdictions and insurance carriers require periodic internal and external inspections—commonly every 3 to 10 years depending on service and local authority having jurisdiction. Confirm what the seller's documentation package includes and verify your local inspection requirements before installation.

What should I inspect before putting it into service?

Verify the ASME nameplate is intact and legible, check all pressure relief devices for current test dates and proper set pressure, and inspect the vessel exterior for shipping damage or corrosion. Since the listing specifies inert gas service only, confirm the metallurgy and design temperature range on the data plate match your intended cryogenic application, and have a qualified inspector review the documentation package to ensure it includes the U-1 manufacturer's data report and any required state or local registration.